diff --git a/tests/testthat/test-client-lib.R b/tests/testthat/test-client-lib.R
index 943cdc90..b9ef94e4 100644
--- a/tests/testthat/test-client-lib.R
+++ b/tests/testthat/test-client-lib.R
@@ -8,6 +8,7 @@ test_that("client lib is standalone", {
   funobjs <- mget(funs, lib)
   for (f in funobjs) expect_identical(environmentName(topenv(f)), "base")
 
+  skip_if_not_installed("codetools")
   expect_message(
     mapply(codetools::checkUsage, funobjs, funs,
            MoreArgs = list(report = message)),
diff --git a/tests/testthat/test-standalone-errors.R b/tests/testthat/test-standalone-errors.R
index eeec174b..fb78289f 100644
--- a/tests/testthat/test-standalone-errors.R
+++ b/tests/testthat/test-standalone-errors.R
@@ -6,6 +6,7 @@ test_that("throw() is standalone", {
   funobjs <- mget(funs, stenv)
   for (f in funobjs) expect_identical(environmentName(topenv(f)), "base")
 
+  skip_if_not_installed("codetools")
   expect_message(
     withCallingHandlers(
       res <- mapply(codetools::checkUsage, funobjs, funs,